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3 years ago

Which statement describes the reactions in an electrochemical cell

Chemistry

1 answer:

34kurt3 years ago

6 0

Answer & explanation:

Summary on electrochemical cells and redox reactions:

Electrochemical cells (or batteries) can be defined as devices capable of transforming chemical energy into electrical energy through spontaneous reactions of redox, in which electron transfer occurs.

Redox it is a chemical reaction in which there is the occurrence of oxidation and reduction of atoms of substances (chemical species) present in the process.

Oxidation is the loss of electrons by an atom of a chemical species, while reduction is the gain of electrons by an atom of a chemical species.

Thus, during an oxirreduction reaction, electrons move from the species that loses them towards the species that will receive them. This "movement" results in the formation of an electric current (or electrical energy) as occurs with batteries, for example.

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Sahil watched a demonstration in which a scientist combined two substances in a sealed container and analyzed the results. The e

11111nata11111 [884]

Answer:

amira's model correctly demonstrates how the properties changed with the rearrangement of the atoms. However not all atoms are accounted for. There is a missing reactant.

Explanation:

Samira's model correctly demonstrated how the atoms in two compounds reacted to form two new products. However, the elements present in the reactants side should be the elements that make up the new products in the product side. But as the diagram shows, Sameera has mistakenly added a new element to one of her products which will be wrong.

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2 years ago

What intermolecular forces are present in each of the substances?

Nesterboy [21]

What intermolecular forces are present in each of the substances? CH4,C3H8,CH3F,HF, C6H5OH (dispersion forces, dipole-dipole forces, or hydrogen bonding);A sample of ideal gas at room temperature occupies a volume of 34.0L at a pressure of 782torr .

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2 years ago

Read 2 more answers

What is the product of the oxidation reaction of isopropyl alcohol with sodium hypochlorite?

Archy [21]

<h3>OXIDATION REACTION</h3>

==============================

$\large \sf \underline{Question:}$

What is the product of the oxidation reaction of isopropyl alcohol with sodium hypochlorite?

==============================

$\large \sf \underline{Answer:}$

$\qquad \qquad \huge \bold{Ketone}$

==============================

$\large \sf \underline{Explanation:}$

The product of the oxidation reaction of isopropyl alcohol with sodium hypochlorite is called ketone.

==============================

3 0

1 year ago

What is the hydrophobic effect? what types of atoms are most likely to be found in portions of molecules or entire molecules tha

HACTEHA [7]

Hydrophobic in simple terms is the "fear" of water.

In chemistry, Ionic salts are technically hydrophilic as they will dissolve in water.
most fats and oils or triesters won't why?

salts are made from ions and their structure contain polar bonds Na+ and Cl-
Fats and oils tend to not have these.

Fats and oils contain many carbon covalent bonds which are non-polar which tend to make the molecule non-polar as a whole, therefore, it can't dissolve in water and is said to be hydrophobic.

Hope that heps :)
NB included a diagram to help.

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3 years ago

How many cm3 are contained in 3.83 x 107 mm3?

gulaghasi [49]

Answer:

3.38 x 10⁴cm³

Explanation:

Given that:

Volume of the substance = 3.83 x 10⁷mm³

The problem entails use to convert from mm³ to cm³;

1000mm³ = 1cm³

So;

3.83 x 10⁷mm³ will produce $\frac{ 3.83 x 10^{7} }{1000}$ = 3.38 x 10⁴cm³

5 0

2 years ago